/rust/registry/src/index.crates.io-1949cf8c6b5b557f/sofars-0.6.1/src/cal/epb2jd.rs

Source
use crate::consts::{DJM0, DTY};

/// Besselian Epoch to Julian Date.
///
/// This function is part of the International Astronomical Union's
/// SOFA (Standards of Fundamental Astronomy) software collection.
///
/// Status: support function.
///
/// # Given:
/// * `epb`: Besselian Epoch (e.g. 1957.3)
///
/// # Returned:
/// * `djm0`: MJD zero-point: always 2400000.5
/// * `djm`: Modified Julian Date
///
/// # Note:
/// The Julian Date is returned in two pieces, in the usual SOFA
/// manner, which is designed to preserve time resolution. The
/// Julian Date is available as a single number by adding djm0 and
/// djm.
///
/// # Reference:
/// Lieske, J.H., 1979, Astron.Astrophys. 73, 282.
pub fn epb2jd(epb: f64) -> (f64, f64) {
    (DJM0, 15019.81352 + (epb - 1900.0) * DTY)
}

Coverage Report

Created: 2026-09-04 06:48

Line	Count	Source
1		use crate::consts::{DJM0, DTY};
2
3		/// Besselian Epoch to Julian Date.
4		///
5		/// This function is part of the International Astronomical Union's
6		/// SOFA (Standards of Fundamental Astronomy) software collection.
7		///
8		/// Status: support function.
9		///
10		/// # Given:
11		/// * `epb`: Besselian Epoch (e.g. 1957.3)
12		///
13		/// # Returned:
14		/// * `djm0`: MJD zero-point: always 2400000.5
15		/// * `djm`: Modified Julian Date
16		///
17		/// # Note:
18		/// The Julian Date is returned in two pieces, in the usual SOFA
19		/// manner, which is designed to preserve time resolution. The
20		/// Julian Date is available as a single number by adding djm0 and
21		/// djm.
22		///
23		/// # Reference:
24		/// Lieske, J.H., 1979, Astron.Astrophys. 73, 282.
25	0	pub fn epb2jd(epb: f64) -> (f64, f64) {
26	0	(DJM0, 15019.81352 + (epb - 1900.0) * DTY)
27	0	}